Correlations between mass, stellar kinematics, and gas metallicity in EAGLE galaxies

The metallicity of star-forming gas in galaxies from the EAGLE (Evolution and Assembly of GaLaxies and their Environments) simulations increases with stellar mass. Here, we investigate whether the scatter around this relation correlates with morphology and/or stellar kinematics. At redshift z = 0, g...

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Detalles Bibliográficos
Autores principales: Zenocratti, Lucas José, De Rossi, M. E., Lara-López, Maritza A., Theuns, Tom
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2020
Materias:
Ciencias Astronómicas
Galaxies: abundances
Galaxies: evolution
Galaxies: high-redshift
Galaxies: star formation
Cosmology: theory
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/124689
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-124689
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Galaxies: abundances
Galaxies: evolution
Galaxies: high-redshift
Galaxies: star formation
Cosmology: theory
spellingShingle Ciencias Astronómicas
Galaxies: abundances
Galaxies: evolution
Galaxies: high-redshift
Galaxies: star formation
Cosmology: theory
Zenocratti, Lucas José
De Rossi, M. E.
Lara-López, Maritza A.
Theuns, Tom
Correlations between mass, stellar kinematics, and gas metallicity in EAGLE galaxies
topic_facet Ciencias Astronómicas
Galaxies: abundances
Galaxies: evolution
Galaxies: high-redshift
Galaxies: star formation
Cosmology: theory
description The metallicity of star-forming gas in galaxies from the EAGLE (Evolution and Assembly of GaLaxies and their Environments) simulations increases with stellar mass. Here, we investigate whether the scatter around this relation correlates with morphology and/or stellar kinematics. At redshift z = 0, galaxies with more rotational support have lower metallicities on average when the stellar mass is below M⋆ ≈ 1010 M⊙. This trend inverts at higher values of M⋆, when prolate galaxies show typically lower metallicity. At increasing redshifts, the trend between rotational support and metallicity becomes weaker at low stellar mass but more pronounced at high stellar mass. We argue that the secondary dependence of metallicity on stellar kinematics is another manifestation of the observed anticorrelation between metallicity and star formation rate at a given stellar mass. At low masses, such trends seem to be driven by the different star formation histories of galaxies and stellar feedback. At high masses, feedback from active galactic nuclei and galaxy mergers plays a dominant role.
format Articulo
Preprint
author Zenocratti, Lucas José
De Rossi, M. E.
Lara-López, Maritza A.
Theuns, Tom
author_facet Zenocratti, Lucas José
De Rossi, M. E.
Lara-López, Maritza A.
Theuns, Tom
author_sort Zenocratti, Lucas José
title Correlations between mass, stellar kinematics, and gas metallicity in EAGLE galaxies
title_short Correlations between mass, stellar kinematics, and gas metallicity in EAGLE galaxies
title_full Correlations between mass, stellar kinematics, and gas metallicity in EAGLE galaxies
title_fullStr Correlations between mass, stellar kinematics, and gas metallicity in EAGLE galaxies
title_full_unstemmed Correlations between mass, stellar kinematics, and gas metallicity in EAGLE galaxies
title_sort correlations between mass, stellar kinematics, and gas metallicity in eagle galaxies
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/124689
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